OPK tests - are these lines negative? x

Hi help please would you say these are still negative OPK test? They are cheap ones from Ebay. Been testing everyday since day before glow showed as green fertile days and glow said peak day was yesterday and yesterday was the first time the OPK showed a test line however today's OPK test line is a fraction darker. I took yesterday's to be negative and today's still seems negative... this is frying my brain - help?  xx